AirDoctor AD3500 Air Purifier vs Dyson Cool Purifier PC1

Buy the AirDoctor AD3500 if clean air is the goal. It moves far more air, filters down to 0.003 microns, and covers a whole large room. The Dyson PC1 is a personal-space purifier and fan that adds voice control and a sleeker look, but its reach is small and its filtration claims are thinner. Owners rate the AirDoctor higher on both counts, and reviewers treat it as a serious purifier rather than a desk accessory.

• Choose the AirDoctor AD3500 if you need to clean the air in a living room, bedroom or open-plan space and want high CADR, deep particle filtration and auto mode.
• Choose the Dyson PC1 if you want a compact purifier and fan for a small room, desk or bedside, and voice control through Alexa, Google Assistant or Siri matters to you.